Directed by
| Umberto Lenzi | ||
Writing Credits (in alphabetical order)
| Umberto Lenzi | ... | (screenplay) |
| Umberto Lenzi | ... | (story) |
| Félix Tusell | ... | (screenplay) |
| Félix Tusell | ... | (story) |
Cast (in credits order)
| Martine Brochard | ... | Paulette Stone | |
| John Richardson | ... | Mark Burton | |
| Ines Pellegrini | ... | Naiba Campbell | |
| Andrés Mejuto | ... | Inspector Tudela | |
| Mirta Miller | ... | Lisa Sanders | |
| Daniele Vargas | ... | Robby Alvarado | |
| Jorge Rigaud | ... | Rev. Bronson (as George Rigaud) | |
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Silvia Solar | ... | Gail Alvarado |
| Raf Baldassarre | ... | Martinez - the tour guide | |
| José María Blanco | ... | Inspector Lara (as José Maria Blanco) | |
| Marta May | ... | Alma Burton | |
| John Bartha | ... | Mr. Hamilton | |
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Olga Pehar | ... | Mrs. Randall |
| Verónica Miriel | ... | Jenny Hamilton | |
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Olga Montes | ... | Peggy Randall |
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Richard Kolin | ... | Mr. Randall |
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Rina Mascetti | ... | Hospital Nurse |
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Fulvio Mingozzi | ... | Policeman |
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Vittorio Fanfoni | ||
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Francesco Narducci | ... | Receptionist at Hotel Presidente |
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Tom Felleghy | ... | Coroner |
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Lorenzo Piani | ||
| Rest of cast listed alphabetically: | |||
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Nestore Cavaricci | ... | Policeman (uncredited) |
| Laura Trotter | ... | Murder Victim at Castle (uncredited) | |
Produced by
| Joseph Brenner | ... | producer |
| José María Cunillés | ... | executive producer |
Music by
| Bruno Nicolai | ||
Cinematography by
| Antonio Millán | ||
Editing by
| Amedeo Moriani | ||
Art Direction by
| Josep Massagué | ... | (as José Massagué) |
Set Decoration by
| Stefano Paltrinieri | ||
Costume Design by
| Adriana Spadaro | ||
Makeup Department
| Iolanda Angelucci | ... | hair stylist (as Jolanda Angelucci) |
| Mario Di Salvio | ... | makeup artist |
| Erminia Lopez | ... | hair stylist |
| Alfredo Tiberi | ... | makeup artist |
Production Management
| Renzo David | ... | production supervisor |
| Antonio Girasante | ... | production manager |
| José Malla | ... | production supervisor |
| Luis Marin | ... | production manager |
Second Unit Director or Assistant Director
| Ángel G. Gauna | ... | assistant director |
Sound Department
| Roberto Arcangeli | ... | sound effects |
| Bruno Moreal | ... | sound mixer |
| Tullio Petricca | ... | boom operator |
| Umberto Picistrelli | ... | sound |
Camera and Electrical Department
| Aldo Bergamini | ... | assistant camera |
| Francisco Javier Ferrer | ... | assistant camera (as Francisco Ferrer) |
| Francesco Narducci | ... | still photographer |
| Elio Polacchi | ... | camera operator |
Editorial Department
| Maurizio Alabiso | ... | assistant editor |
Music Department
| Bruno Nicolai | ... | conductor |
Script and Continuity Department
| Francesca Montani | ... | script supervisor |
Additional Crew
| Luciano De Ambrosis | ... | voice dubbing: Fulvio Mingozzi (uncredited) |
| Carolyn De Fonseca | ... | voice dubbing: Silvia Solar (english version) (uncredited) |
| Maria Pia Di Meo | ... | voice dubbing: Marta Miller (uncredited) |
| Arturo Dominici | ... | voice dubbing: Daniele Vargas (uncredited) |
| Germana Dominici | ... | voice dubbing: Marta May (uncredited) |
| Micaela Esdra | ... | voice dubbing: Ines Pellegrini (uncredited) |
| Vittoria Febbi | ... | voice dubbing: Martine Brochard (uncredited) |
| Glauco Onorato | ... | voice dubbing: Raf Baldassarre (uncredited) |
| Bruno Persa | ... | voice dubbing: Andrés Mejuto (uncredited) |
| Rita Savagnone | ... | voice dubbing: Silvia Solar (uncredited) |
| Massimo Turci | ... | voice dubbing: John Richardson (uncredited) |
| Serena Verdirosi | ... | voice dubbing: Monica Viriel (uncredited) |